Yet another newbie plumbing question :-)

So I have most of my pipes back where I want them. In one place I come out
of the floor with a hot water pipe, elbow, elbow, elbow, connect to shower
valve. I tee out of this and elbow, elbow, elbow, and stick out the wall
for sink (I know, hard to picture exactly what it looks like, but there are
about six elbows total because that is what it takes to get the pipe where
it is needed lol)

Question - if I secure the pipes to the wall here and there, will the
stress of warming and cooling pipes that are fastened to wall and have a
bunch of elbows here and there cause premature failing, or is the pipe
strong enough to take the stress? I'm using copper, rigid, 3/4 to shower
valve, 1/2 from the tee to sink valve.